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Chemical Coordination and Integration

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Briefly explain the structure of adrenal gland and hormones secreted by its different parts.

Adrenal gland :

The adrenal glands are present in pairs, one at the anterior part of each kidney. The adrenal gland is made of two kinds of tissues namely 
i. Adrenal medulla. 
ii Adrenal cortex. 

Parts of Adrenal gland :

1. Adrenal cortex : It is the outer part of the adrenal gland. It is further differentiated into three parts :

(a) Zona glomerulosa (Outer zone)

(b) Zona fasciculata (Middle zone)

(c) Zona reticulosa (Inner zone outer to adrenal medulla).

Hormones secreted - Adrenal cortex secretes the following three hormones derived from steroids :

(i) Aldosterone or mineralocorticoids.

(ii) Cortisol or glucocorticoids.

(iii) Sexcorticoids or androgens.

2. Adrenal medulla : It lies inner to cortex.

Hormones secreted- It secretes two hormones namely:

(a) Epinephrine

(b) Norepinephrine.

110 Views

Name the largest endocrine gland.

Thyroid gland.
479 Views

Why is the Parathyroid hormone called hypercalcemic hormone?

PTH or parathyroid hormone is also called hypercalcemic hormone as it increase the calcium level in the blood.
585 Views

What is goitre?

Goitre is the condition in the the thyroid gland is enlarged and the neck portion becomes swollen .It is due to the deficiency of iodine in our diet which results in the less production and secretion of the thyroid hormones that is hypothyroidism.
467 Views

Name the cells that the thyroid gland is composed of.

The thyroid gland is composed of the following :
i. Follicles
ii. Stromal tissue
523 Views

Name the endocrine gland which is H shaped.

Thyroid gland.
813 Views